The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2012
Filed:
Oct. 30, 2009
Steffen Joos, Murr, DE;
Klaus Langhans, Winnenden, DE;
Steffen Joos, Murr, DE;
Klaus Langhans, Winnenden, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
The invention relates to a fuel system of a portable handheld work apparatus driven by an internal combustion engine. The fuel system includes a fuel tank (), a fuel pump, a fuel line () leading from the fuel tank () to the fuel pump and a first suction head () which is disposed at an end () of the fuel line () at the fuel tank. At least a second suction head () is arranged within the fuel tank () and is connected in the fuel line () in series ahead of the first suction head (). The second suction head () has an external suction surface which is formed by a porous covering (). The porous covering () delimits a suction space. A guide is arranged in the suction space which guides the through-passing fuel flow at least approximately along the entire inner surface of the porous covering ().